chore: add Flutter demo embedding to website

.gitignore

@@ -116,3 +116,11 @@ website/public/_pagefind/
 # Claude Code
 CLAUDE.md
 .claude/settings.local.json
+
+# Flutter web demos (generated via: cd examples && flutter build web)
+# These are built and deployed separately, not committed to git
+website/public/demos/
+
+# Playwright
+website/playwright-report/
+website/test-results/

AGENTS.md

@@ -108,6 +108,24 @@ melos run test:dart       # Dart package tests
 melos run test:coverage   # With coverage report
 ```
 
+## Git Conventions
+
+**Branch naming** (Git Flow prefixes):
+- `feat/` - New features
+- `fix/` - Bug fixes
+- `chore/` - Maintenance (deps, config, cleanup)
+- `docs/` - Documentation changes
+- `refactor/` - Code restructuring
+- `test/` - Test additions/updates
+
+**Commit messages** (Conventional Commits):
+```
+<type>(<scope>): <description>
+
+type: feat, fix, chore, docs, refactor, test, ci
+scope: mix, mix_generator, mix_annotations, mix_lint, examples, website
+```
+
 ## Key Files
 
 - `melos.yaml` - All script definitions